CN215487814U - High-pressure needle valve - Google Patents

Abstract

The utility model relates to the technical field of clean energy equipment, in particular to a high-pressure needle valve which comprises a valve body, wherein an air inlet, an air outlet and a sewage draining outlet are formed in the valve body; the air inlet is communicated with the air outlet through a first channel, and a filter element is arranged in the first channel; the sewage draining outlet is communicated with the first channel through a second channel, and the communication position of the second channel and the first channel is arranged at the upstream of the filter element. The purpose is that the filter element is arranged in the valve body, and the high-pressure hydrogen is filtered by the filter element; the seal, the filter element and the valve core can be replaced directly by screwing and pulling outwards, so that the accessories can be replaced directly, and later maintenance is easier and more convenient.

Description

High-pressure needle valve

Technical Field

The utility model belongs to the technical field of clean energy equipment, and particularly relates to a high-pressure needle valve.

Background

In the new energy industry, hydrogen is filled through high-pressure hydrogenation equipment, high-purity hydrogen is needed in the high-pressure hydrogenation equipment, and in order to ensure the purity of the hydrogen, a high-precision filter, a high-pressure regulating valve and pipeline accessories are arranged on a pipeline system of the high-pressure hydrogenation equipment, so that the filled hydrogen is ensured to be filtered.

However, the high-precision filter is arranged on the pipeline system, so that the number of pipeline accessories in the system is large, the cost is high, the pipeline of the system is complicated, and the purposes of optimizing pipeline arrangement and reducing cost cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-pressure needle valve for optimizing pipeline arrangement, which is compact and exquisite in structure, a filter element is arranged in a valve body, and the purpose of filtering high-pressure hydrogen is achieved through the filtering of the filter element; the seal, the filter element and the valve core can be replaced directly by screwing and pulling outwards, so that the accessories can be replaced directly, and later maintenance is easier and more convenient.

The technical scheme adopted by the utility model is as follows: a high-pressure needle valve comprises a valve body, wherein an air inlet, an air outlet and a sewage draining outlet are formed in the valve body, a first adjusting mechanism is arranged at the air inlet, and a second adjusting mechanism is arranged at the sewage draining outlet; the air inlet is communicated with the air outlet through a first channel, and a filter element is arranged in the first channel; the sewage draining outlet is communicated with the first channel through a second channel, and the communication position of the second channel and the first channel is arranged at the upstream of the filter element.

Preferably, the first adjusting mechanism comprises an air inlet valve core and an air inlet valve rod thread sleeve, the air inlet valve core is connected with the air inlet valve rod thread sleeve, and the air inlet valve rod thread sleeve is detachably connected with the valve body; the size of the air inflow at the air inlet is adjusted through the air inlet valve core.

Preferably, the second adjusting mechanism comprises an exhaust valve core and an exhaust valve rod threaded sleeve, the exhaust valve core is connected with the exhaust valve rod threaded sleeve, and the exhaust valve rod threaded sleeve is detachably connected with the valve body; the amount of the discharged sewage at the sewage discharge port is adjusted by the exhaust valve core.

Preferably, the filter core is connected with the sealing ring, the sealing ring can be dismantled with the valve body and be connected, the sealing ring can take the filter core to break away from the valve body.

Preferably, the number of the exhaust ports is two, namely a first exhaust port and a second exhaust port; the sealing ring is provided with an inlet, a first outlet and a second outlet respectively, the inlet is communicated with the first outlet and the second outlet respectively, the inlet is communicated with the first channel through the filter element, the first outlet is communicated with the first exhaust port, and the second outlet is communicated with the second exhaust port.

Preferably, the internal diameter of first passageway is by air inlet to gas vent reducing setting, the sealing ring sets up in the great one section of first passageway internal diameter, the diameter of sealing ring is equivalent with the great one section diameter of first passageway internal diameter, set up the conical surface sealing washer on the sealing ring, the setting of conical surface sealing washer is in the one side that is close to the air inlet.

Preferably, the sealing ring is connected with an upper end compression nut, and the upper end compression nut is detachably connected with the valve body; the first outlet corresponds to a first exhaust port, and the inner diameter of the first outlet is equivalent to that of the first exhaust port; the second outlet corresponds to the second exhaust port, and the inner diameter of the second outlet is equivalent to that of the second exhaust port.

Preferably, the diameter of the air inlet is larger than that of the sewage draining outlet.

The utility model has the advantages that:

1) according to the utility model, the filter element is arranged in the valve body, high-pressure hydrogen can be filtered through the filter element, the purity of the hydrogen is ensured, the pipeline design can be reduced through arranging the filter element in the valve body, and the valve body has a compact and small overall appearance and is convenient to install; the air inlet valve controls air inlet, two-channel shunting is realized automatically through the filter, the blowdown valve is opened after the air inlet valve is closed, and the system gas pressure is used for reverse purging to realize cleaning of a channel; the utility model is convenient to maintain, and if the seal, the filter element or the valve core is replaced, the whole valve body is not required to be disassembled, the corresponding nut and thread sleeve are directly disassembled according to the requirement, and the accessories are replaced;

2) the high-pressure needle valve is provided with the air inlet and the two air outlets, so that the function of a three-way pipeline can be realized, and meanwhile, when pollution discharge is not carried out, the high-pressure needle valve can be used as a control valve on a pipeline system so as to control air inlet and air exhaust; the high-pressure needle valve integrates the filter, the tee joint and the valve which are required to be arranged on the traditional pipeline, and can save a high-pressure valve and the high-pressure tee joint when the system pipeline is installed, thereby reducing the pipeline design.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention;

FIG. 3 is a first perspective view of the present invention;

fig. 4 is a second perspective view of the present invention.

In the figure: 1-a valve body; 2-a sealing ring; 3-pressing the nut at the upper end; 4-an air inlet valve core; 5-an air inlet gasket; 6-an air inlet valve is provided with a valve clamping ring; 7-an air inlet valve rod; 8-air inlet valve rod thread sleeve; 9-an air inlet regulating valve handle; 10-an exhaust valve core; 11-a venting washer; 12-an exhaust valve compression ring; 13-an exhaust valve stem; 14-exhaust valve stem thread insert; 15-a filter element; 16-a sealing ring; 17-an air inlet valve stem sealing ring; 18-exhaust valve stem sealing ring; 19-a conical surface sealing ring; 20-sealing retainer ring; 21-an air inlet; 22-first exhaust port; 23-a second exhaust port; 24-a sewage draining outlet; 25-exhaust regulating valve handle; 26-an inlet; 27-a first outlet; 28-second outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 4, the high-pressure needle valve is used for a hydrogenation pipeline and specifically comprises a valve body 1, wherein the valve body 1 is provided with an air inlet 21, an air outlet and a sewage outlet 24, the air inlet 21 is connected with an air inlet pipe of high-pressure hydrogen, and the high-pressure hydrogen enters the valve body 1 through the air inlet 21 and is discharged from the air outlet for air entrainment.

The air inlet 21 department sets up first adjustment mechanism, can adjust the size of air input in the air inlet 21 through first adjustment mechanism, also can close air inlet 21 through first adjustment mechanism, drain 24 department sets up second adjustment mechanism, and the size of the blowdown flow in the second adjustment mechanism can adjust drain 24, does not need drain 24 during operation, also can close drain 24 through the second adjustment mechanism.

The air inlet 21 is communicated with the air outlet through a first channel, the filter element 15 is arranged in the first channel, high-pressure hydrogen enters the first channel after entering from the air inlet 21, and is discharged from the air outlet after being filtered by the filter element 15 in the first channel, so that the aim of filtering the high-pressure hydrogen is fulfilled; the sewage draining exit 24 is communicated with the first channel through a second channel, the communication position of the second channel and the first channel is arranged at the upstream of the filter element 15, and the sewage draining exit 24 is in a closed state in the gas filling state; when the reverse purging is needed for blowdown, the blowdown port 24 is opened, the air inlet 21 is closed, and at the moment, high-pressure gas in the valve body 1 is discharged from the blowdown port 24 through the filter element 15 due to the system pressure of the high-pressure gas, so that the purpose of reversely purging the filter element 15 is achieved.

The first adjusting mechanism comprises an air inlet valve core 4 and an air inlet valve rod threaded sleeve 8, the air inlet valve core 4 is connected with the air inlet valve rod threaded sleeve 8, and the air inlet valve rod threaded sleeve 8 is detachably connected with the valve body 1; the size of the intake air amount at the intake port 21 is adjusted by the intake valve core 4. The case 4 that admits air is connected with the valve rod 7 that admits air, and the case 4 that admits air matches with the diameter of the valve rod 7 that admits air, establishes at the outside cover of the valve rod 7 that admits air and connects the valve rod swivel nut 8 that admits air, sets up the external screw thread on the valve rod swivel nut 8 that admits air global, and the external screw thread cooperatees with the internal thread on the valve body 1, through the threaded connection of the valve rod swivel nut 8 that admits air and valve body 1, reaches the purpose of adjusting the case 4 positions that admits air. Still overlap and be equipped with air inlet gasket 5 outside air inlet valve core 4, set up air inlet valve rod clamping ring 6 between air inlet gasket 5 and air inlet valve rod swivel nut 8, air inlet valve rod clamping ring 6's cross-section is T shape, and air inlet valve rod clamping ring 6's big terminal surface contacts with air inlet valve rod swivel nut 8, and air inlet valve rod swivel nut 8's little terminal surface contacts with air inlet gasket 5 to guarantee sealed effect.

The second adjusting mechanism comprises an exhaust valve core 10 and an exhaust valve rod threaded sleeve 14, the exhaust valve core 10 is connected with the exhaust valve rod threaded sleeve 14, and the exhaust valve rod threaded sleeve 14 is detachably connected with the valve body 1; the amount of the sewage at the sewage outlet 24 is adjusted by the exhaust valve core 10. The second adjusting mechanism is arranged the same as the first adjusting mechanism, the exhaust valve core 10 is connected with the exhaust valve rod 13, the exhaust valve rod thread insert 14 is sleeved and connected outside the exhaust valve rod 13, the external thread outside the exhaust valve rod thread insert 14 is matched with the valve body 1, and the thread is connected on the valve body 1; an exhaust gasket 11 is sleeved outside the exhaust valve core 10, an exhaust valve stem pressing ring 12 is arranged between the exhaust gasket 11 and an exhaust valve stem threaded sleeve 14, and the structure of the exhaust valve stem pressing ring 12 is the same as that of the air inlet valve stem pressing ring 6, so that the sealing of a sewage outlet 24 is ensured.

The utility model discloses a valve body, including sealing ring 2, filter core 15, sealing ring 2 and filter core 15, filter core 2 and sealing ring 2 are connected, sealing ring 2 and filter core 15 back in the direct insertion valve body 1 in this embodiment, set up upper end gland nut 3 above sealing ring 2, guarantee to seal ring 2 compress tightly for sealing ring 2 can not fall out, and upper end gland nut 3 sets up also can be connected or integrative setting with sealing ring 2 components of a whole that can separate.

When the upper-end compression nut 3 is connected with the sealing ring 2, the upper-end compression nut 3 can be connected through threads, and at the moment, the upper-end compression nut 3 can be used as an exhaust adjusting mechanism of the valve body 1, namely the upper-end compression nut 3 is detachably connected with the valve body 1, the upper-end compression nut 3 is connected with the valve body 1 through threads, and the upper-end compression nut 3, together with the sealing ring 2 and the filter element 15, can be drawn out by screwing the upper-end compression nut 3; the first outlet 27 on the sealing ring 2 corresponds to the first exhaust port 22, and the inner diameter of the first outlet 27 is equivalent to that of the first exhaust port 22; the second outlet 28 corresponds to the second exhaust port 23, and the inner diameter of the second outlet 28 corresponds to the inner diameter of the second exhaust port 23. When the exhaust gas adjustment is needed, only the upper-end gland nut 3 needs to be screwed, so that the upper-end gland nut 3 moves up and down (in the direction in fig. 1), the sealing ring 2 is driven to move up and down, the first outlet 27 and the second outlet 28 on the sealing ring 2 completely correspond to or partially misplace the first exhaust port 22 and the second exhaust port 23, and the effect of finely adjusting the exhaust gas amount at the exhaust port is achieved.

A sealing ring 16 is sleeved on the outer wall of the upper end compression nut 3, and a sealing check ring 20 is arranged on the sealing ring 16, so that the sealing of the outer peripheral surface of the upper end compression nut 3 is ensured, and high-pressure hydrogen cannot leak out; the sealing ring 2 can be provided with the filter element 15 to be separated from the valve body 1, and when the valve is disassembled, the upper end gland nut 3 is only required to be firstly disassembled, then the sealing ring 2 is taken out, the sealing ring 2 and the filter element 15 connected with the sealing ring 2 can be taken out from the valve body 1 together, and the filter element 15 is replaced.

The number of the exhaust ports is two, namely a first exhaust port 22 and a second exhaust port 23; an inlet 26, a first outlet 27 and a second outlet 28 are respectively arranged on the sealing ring 2, the inlet 26 is respectively communicated with the first outlet 27 and the second outlet 28, the inlet 26 is communicated with the first channel through the filter element 15, the first outlet 27 is communicated with the first exhaust port 22, and the second outlet 28 is communicated with the second exhaust port 23. It will be understood that the high pressure hydrogen gas is filtered by the filter element 15, enters the sealing ring 2, enters the first outlet 27 and the second outlet 28 through the inlet 26 in the sealing ring 2, and finally exits the valve body 1 through the first exhaust port 22 and the second exhaust port 23. The first outlet 27 and the second outlet 28 are provided on the circumferential surface of the seal ring 2, and are taken out from the upper side of the valve body 1 (i.e., the taking-out direction of the seal ring 2 is perpendicular to the first outlet 27 and the second outlet 28) when the seal ring 2 is taken out.

The internal diameter of first passageway is by air inlet 21 to gas vent reducing setting, sealing ring 2 sets up in the great one section of first passageway internal diameter, the diameter of sealing ring 2 is equivalent with the great one section diameter of first passageway internal diameter, set up conical surface sealing washer 19 on the sealing ring 2, conical surface sealing washer 19 sets up the one side of being close to air inlet 21. The sealing ring 2 is externally sleeved with a conical sealing ring 19, the interior of the first channel can be sealed through the conical sealing ring 19, so that high-pressure hydrogen flows out after being filtered from the filter element 15 (after entering the inner side from the outer side of the filter element 15, and flows out from the first outlet 27 and the second outlet 28 on the sealing ring 2), and cannot leak from the outer side wall of the sealing ring 2 and the outer side wall of the upper-end gland nut 3.

The diameter of the air inlet 21 is larger than that of the sewage draining outlet 24, the diameter of the air inlet 21 is larger, so that air inflow is guaranteed, and the diameter of the sewage draining outlet 24 can be relatively smaller due to the fact that only residual gas in the valve body 1 is used during sewage draining.

A filtering and sewage discharging method of a high-pressure needle valve is explained by taking high-pressure hydrogen as an example, and comprises the following steps:

s1: the high-pressure needle valve is arranged on a fluid pipeline, an air inlet pipe is connected with an air inlet 21 on the high-pressure needle valve, an air outlet pipe is connected with an air outlet on the high-pressure needle valve, and a drain pipe is connected with a drain outlet 24 on the high-pressure needle valve;

s2: when the fluid is filtered, the air inlet 21 is opened, the drain outlet 24 is closed, namely the exhaust regulating valve handle 25 is screwed, so that the exhaust valve core 10 moves towards the right side in the figure 1, and the drain outlet 24 is shielded; the intake port 21 is opened, that is, by screwing the intake air regulating valve handle 9, so that the intake valve spool 4 is moved to the right. So that the high-pressure fluid flows into the first channel from the air inlet 21 and flows into the filter element 15; the high pressure of the gas itself is pressed from the outside of the filter element 15 to the inside of the filter element 15, or from the inside of the filter element 15 to the outside of the filter element 15, and the high pressure hydrogen gas after filtration flows into the inlet 26 of the seal ring 2, flows from the first outlet 27 and the second outlet 28 in the seal ring 2 to the first exhaust port 22 and the second exhaust port 23, respectively, and finally enters the exhaust pipe.

S3: when reversely purging, the air inlet 21 is closed, the drain outlet 24 is opened, and depending on the pressure in the high-pressure needle valve, because the high-pressure hydrogen is in the valve body 1 and has pressure, the fluid is pressed to the outer side of the filter element 15 from the inner side of the filter element 15 or pressed to the inner side of the filter element 15 from the outer side of the filter element 15, and after reversely purging the impurities attached to the filter element 15, the cleaning and the draining of the flow channel in the valve body 1 and the filter element 15 are realized, and finally the impurities are discharged from the drain outlet 24.

In step S2, during the process of discharging the filtered fluid from the exhaust port, the amount of gas discharged from the exhaust port can be adjusted by adjusting the exhaust adjustment mechanism in the high pressure needle valve. The exhaust adjusting mechanism is the upper end gland nut 3 and the sealing ring 2, the upper end gland nut 3 is screwed to move up and down, the sealing ring 2 is driven to move up and down, the first outlet 27 and the second outlet 28 on the sealing ring 2 completely correspond to the first exhaust port 22 and the second exhaust port 23 or partially dislocate the first exhaust port and the second exhaust port, and therefore the effect of finely adjusting the exhaust amount at the exhaust port is achieved.

The above-mentioned embodiments are preferred embodiments, it should be noted that the above-mentioned preferred embodiments should not be considered as limitations to the utility model, and the scope of protection of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims (8)

1. The utility model provides a high pressure needle valve, includes valve body (1), its characterized in that: the valve body (1) is provided with an air inlet (21), an air outlet and a sewage draining exit (24), a first adjusting mechanism is arranged at the air inlet (21), and a second adjusting mechanism is arranged at the sewage draining exit (24); the air inlet (21) is communicated with the air outlet through a first channel, and a filter element (15) is arranged in the first channel; the sewage draining outlet (24) is communicated with the first channel through a second channel, and the communication position of the second channel and the first channel is arranged at the upstream of the filter element (15).

2. The high pressure needle valve of claim 1, wherein: the first adjusting mechanism comprises an air inlet valve core (4) and an air inlet valve rod threaded sleeve (8), the air inlet valve core (4) is connected with the air inlet valve rod threaded sleeve (8), and the air inlet valve rod threaded sleeve (8) is detachably connected with the valve body (1); the size of the air inlet amount at the air inlet (21) is adjusted through the air inlet valve core (4).

3. The high pressure needle valve according to claim 1 or 2, characterized in that: the second adjusting mechanism comprises an exhaust valve core (10) and an exhaust valve rod threaded sleeve (14), the exhaust valve core (10) is connected with the exhaust valve rod threaded sleeve (14), and the exhaust valve rod threaded sleeve (14) is detachably connected with the valve body (1); the amount of the discharged sewage at the sewage outlet (24) is adjusted by the exhaust valve core (10).

4. The high pressure needle valve of claim 3, wherein: the filter element (15) is connected with the sealing ring (2), the sealing ring (2) is detachably connected with the valve body (1), and the sealing ring (2) can be provided with the filter element (15) to be separated from the valve body (1).

5. The high pressure needle valve of claim 4, wherein: the number of the exhaust ports is two, namely a first exhaust port (22) and a second exhaust port (23); set up import (26), first export (27) and second export (28) on sealing ring (2) respectively, import (26) communicate with first export (27) and second export (28) respectively, import (26) are through filter core (15) and first passageway intercommunication, first export (27) and first gas vent (22) intercommunication, second export (28) and second gas vent (23) intercommunication.

6. The high pressure needle valve of claim 5, wherein: the internal diameter of first passageway is by air inlet (21) to gas vent reducing setting, sealing ring (2) set up in the great one section of first passageway internal diameter, the diameter of sealing ring (2) is equivalent with the great one section diameter of first passageway internal diameter, set up conical surface sealing washer (19) on sealing ring (2), conical surface sealing washer (19) set up the one side of being close to air inlet (21).

7. The high pressure needle valve according to claim 5 or 6, wherein: the sealing ring (2) is connected with an upper end compression nut (3), and the upper end compression nut (3) is detachably connected with the valve body (1); the first outlet (27) corresponds to the first exhaust port (22), and the inner diameter of the first outlet (27) is equivalent to that of the first exhaust port (22); the second outlet (28) corresponds to the second exhaust port (23), and the inner diameter of the second outlet (28) is equivalent to the inner diameter of the second exhaust port (23).

8. The high pressure needle valve of claim 7, wherein: the diameter of the air inlet (21) is larger than that of the sewage draining outlet (24).

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